console.log(`修改状态`);
let body = $response.body;
body =  JSON.parse(body);
if (body.body){
    console.log(`${JSON.stringify(body.body)}`);
    
}
body.body = {"grade":"2"};  
body.code = "0";  
body.msg = "操作成功！";  

body =  JSON.stringify(body);
$done({ body })